Publication manual of the American Psychological Associations 
by APA 
 - 6th ed. 
 - Washington :  APA,  2012. 
 - 272 p. 
<br/><br/><label>ISBN: </label>9781433805615 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social and Behavioral Sciences.
<br/><br/><label>Dewey Class. No.: </label>808.06615  / AME/PUB